* Higher education: This is a very common and generally accepted synonym.
* Tertiary education: This is a more formal and academic term.
* Further education: This term is more common in British English and might encompass vocational training as well.
* Advanced education: This highlights the advanced nature of the studies.
* College/University level: This specifies the type of institution.
The most appropriate synonym will depend on the specific situation. For example, "higher education" is a good general-purpose replacement, while "tertiary education" might be better suited for an academic paper.